Robert Downey Jr. looks ready for a fight on the cover of Men’s Journal magazine’s May 2010 issue.Here’s what the 45-year-old actor had to share:On advice for practicing Wing Chun, a martial arts discipline: “Seriously, don’t worry about looking like an idiot. It’s like life: The less self-conscious you are, the better it works. And remember, lots of ice and Advil afterward. Trust me on that one.”On how Wing Chun helps him cope: “This is all about focus. Wing Chun teaches you what to concentrate on, whether you’re here or out in the world dealing with problems. It’s second nature for me now. I don’t even get to the point where there’s a problem.”Guy Ritchie, on working with Robert: “The word to describe Robert is hard. I know that’s f—ing ridiculous in describing an actor, but he really can scrap. He’s done time in jail, which didn’t exactly soften him up. He has a real physicality that is pretty f—ng amazing.”